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# C Program to Check Even Number

## What are Even Numbers?

An integer (never a fraction) that can be divided exactly by 2. For example, 10 is an even number, i.e., 10 % 2 = 0.

Note: % is a Modulus (Division Remainder) operator, it finds the remainder after division of one number by another. Please check our Arithmetic Operators for more details.

Tips: It is recommended to use our online Even Numbers calculator for better understanding.

## Using For Loop

In the following example, we will find all the Even Numbers between 10 and 25 using for loop.

### Example

C Compiler
#include <stdio.h> int main() { int start = 10; int end = 25; printf("Even numbers between %d and %d:\n", start, end); for(start=start; start<=end; start++) { if(start % 2 == 0) printf("%d ", start); } return 0; }

## Using While Loop

In the following example, we will find all the Even Numbers between 10 and 25 using while loop.

### Example

C Compiler
#include <stdio.h> int main() { int start = 10; int end = 25; printf("Even numbers between %d and %d:\n", start, end); while(start <= end) { if(start % 2 == 0) printf("%d ", start); start++; } return 0; }

## Using do while Loop

In the following example, we will find all the Even Numbers between 10 and 25 using do while loop.

### Example

C Compiler
#include <stdio.h> int main() { int start = 10; int end = 25; printf("Even numbers between %d and %d:\n", start, end); do{ if(start % 2 == 0) printf("%d ", start); start++; }while(start <= end); return 0; }

## Even Numbers between any Given Range

In the following example, we will find all the Even numbers between any given range.

### Example

C Compiler
#include <stdio.h> int main() { int start, end; printf("Enter a (int) starting number: "); scanf("%d", &start); printf("Enter an (int) ending number: "); scanf("%d", &end); printf("\nEven numbers between %d and %d:\n", start, end); for(start=start; start<=end; start++) { if(start % 2 == 0) printf("%d ", start); } return 0; }

## Check Whether the Given Number is Even or Odd

In the following example, we will check whether the given number is an Even number or Odd number.

### Example

C Compiler
#include <stdio.h> int main() { int num; printf("Enter a (int) number: "); scanf("%d", &num); if(num % 2 == 0) printf("%d is an even number", num); else printf("%d is an odd number", num); return 0; }